-40%
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr
TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr

TV7 Tested 1953 CBS HYTRON 12BH7 TUBE - Black Plates Large Vertical Boxed Gettr

$ 17.56

  • Brand: Hytron
  • Country/Region of Manufacture: United States
  • MPN: 12BH7
  • Model: 12BH7
  • Seller Notes: “Used, Dan Nelson Calibrated (11/11/2021) TV7 Tested Strong (65.1 at 15.3mA / 54.1 at 12.6mA)”
  • Type: Dual Triode

Description

ONE Vacuum Tube 1953 (CBS) Hytron 12BH7 Hytron (CBS-Hytron) 12BH7 Vacuum Tube - Black Plates - Vertical Top side Large Horseshoe Boxed Getter - White Inked on top of tube on sides of the top pointed glass "12BH7" "12BH7" - White inked on glass "HYTRON" "53-26" "Made in U.S.A." - Clean glass and pins, plug in and play condition Reference: Minimum Good TV7= 30/30 = 1,500/1,500 uMhos ( Gm ) Average CBS-Hytron factory NOS 'Bogey' spec listed in data sheet when tested at 250v Plate Voltage is 62/62 = 3,100/3,100 uMhos Gm at 11.5/11.5 mA Plate Current Calibrated TV7 tested : Strong Gm/Very Strong mA, Tested NO Shorts, No Gas, No Leakage, No micro phonics detected Plate 1: 65.1 = 3,252.5 uMhos Gm at 15.3mA (anode) Plate Current, (105% ave. Nos Gm) Plate 2: 54.1 = 2,725,5 uMhos Gm at 12.6mA (anode) Plate Current (88% ave. Nos Gm) Ships in a vintage CBS-Hytron box with "12BH7A" printed on the label as seen in the pics Our Test set : Recent Dan Nelson (11/11/2021) Restored, Enhanced, Upgraded & Calibrated with Digital Meter reading Transconductance (Gm) and Anode Plate Current Dissipation (mA). We use Nolan Lee's last published TV7 conversation spreadsheet to transpose TV7's numerical meter readings (0-120) into actual uMhos Gm transconductance #'s based upon the Selector switch settings( A-E). WE SHIP FAST, WE COMBINE SHIPPING ON MULTIPLE PURCHASES, WE CAREFULLY TEST EVEN NOS/NIB VACUUM TUBES TO ENSURE THEY TEST NEW GIVEN THE ORGINAL MANUFACTURERS DATA SHEET. WE PACK WELL FOR SAFE SHIPPING, Many years of shipping Experience with FRAGILE Vacuum Tubes and Vintage Electronics. WE Usually SHIP Within 1 Day, Orders received by 1pm EST usually ship SAME DAY as Immediate Purchase. Monday-Saturday. Our standard service for ALL 50 States is USPS 1st Class, 2nd option is USPS Priority Mail small box. International Shipping via eBay Economy Small Package Service space available container air-freight (10 day to 6weeks delivery depending upon region/country).